Liquid spray device



July 28, 1936. J. P. DESMT LI UID SPRAY DEVICE Original Filed April 2; 1934 3 Sheets-Sheet INVEN' TOR John P D esne t BY Q. .QA 3,31

` ATTORNEY 4 Jul 28, 1936. Dasm 2,o4s, s47

LIQUID SPRAY DEVI CE Original Filed Apr-il 2, 1934 3 Sheets-Sheet 2 m E: E Q 2 m m V ka &

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N INVENTOR V John P. Desmet v -tion,- and with slope -toward their outer from that of the rotatioh of the blades as shown flow ot der pressure at .the sake of lightness. scoops aid in gathering u'p the liquid in the chamber 3 with the rotation of the device and feeding such liquid to theconduits.- The'` conduits preferably ends in a direction away in Fig. 4 so as to further. aid in the ready the liquid to the chambrs I'l. g Projecting 'inwardly'and radially from the inner tube ii intermediate its 'ends is a of thin circumferentially spaced jet or nozzle members 22, having radial sht-like passages 23 leadingtothe chamber l'l from those edges oi' the nozzles' which face the trailing end of the tube 13, as shown in Fig. 5. l

The conduit |8 is designed s'o that its cross sectional area is approximately one-third greater than that of the combined area of the nozzle slits. -As a result of this arrangement the liquid is unthe nozzles and is forcedthrough the same. This is necessary in order to have a tangent to -charg'e opening:: rrom the nozzle described which'causes the air to positively forced through the narrow nozzle slits. This forcing action of the liquid is aided by the inclination of the conduit It. which maybe considered and is in efl'ect an impeller tube. i e

-The purpose oi removably mountingthe nozzle the 'azia plane of the same as shown in Fig. 8. Also they-are not radially disposed but are an imaginry circleconcentric with the axis oi' the tube, as shown in Fig. 7. The dispassages !Ia are sdjacent the trailing ends oi' the nozzles but on the leading side direction oi' rotation ot the prope'ller unit. This arrsngement not only provides for metric discharge oi liquid but insures a thorough atomizing of the liquid by the through the tube from its leading end, on 'account of the particular `positioning ot the nomes as broken up as it comes in contact with the flows .past the nozzles. i

A' still different nozzle arrangement is shown for a liquid mixture in which the solid content is heavy andtends to precipitate. such as lead arsenate. In this case the nozzles ?lb in the' tube |5b are parallei to each other and project straight across; the tube in spaced relation !rom the sido scoops register with the adjacent ends of the diflerent conduits ll to plurality adjacentthe tank, but

i cumferentially proportional of the same relative to the` a large voluair stream flowing v be mtated and' A of the same nearest the intake conduit !8. To i which fllls up all the area of .the chamber' ex- -cept that immediately adjacent the conduit a and the intake openings to the nozzles. In all cases it is to be understood that the length and diameter of the nozzle tubes is the same so that' they can be interchangeably mounted in .the tubes |3 by merely removing the nuts I 6.-

The liquid is continuou'sly ied to the spindle from' apipe 25 leading laterally from a jsupply tani: in the fuselage of the 'airplane (not shown).

The outer end of the pipe is-connected, to the adjacent end oi' the spindle l, in front of the hearing 3, by a pipe fittng 26 which is' formed with an elbow as shown in Fig. 1. The flow of liquid through the pipe and spindle and into the chamber 9 may be controlled by a master valve during operationis controlled by a flat disc valve 21 engaging the rear end of the spindle. The valve is maintained in centralized relation A rod 29 Secured to the valve projects through the spindle to its rear end and passeslthrough the side of the elbow fitting '264 being there sup-.

with said spindle by guide .flngers 28 connected thereto, and slidably projecting into the spindle.

prlngby suitable means controlled by the pilot of the airplane; mean is shown mounted inconnection with the 'eihow 26 or other In the present instance such fixed parts.' One arm of thebll crank engages a collar 34 on the outer end of the rod while'the other arm is connected to a' pull rod 35 extending into the cockpit of the airplane. i

Projecting outwardly from the body I adjacent its forward end are booster propeller blades 36.

in the air stream and aid in rotating the device besides relieving the blades strain.`

In operation, with the flight of the airplane the' ody l2 of some of the airplane. With such rotation the liquid, which constantly discharged into the chamber along the conduits s to the chambers l' by centrii'ugal action. aided by the scoops !9. At the same time air is flowing through the tubes i 3 and |5`due to the blades cutting through the air. As a result the liquid in the chambers is forced through the nozzle passages as previously explained and discharged into the Venturi tube passages P where said liquid is there thoroughly mixed with the air flowing through saidpassages before being dischargedinto the surrounding atmosphere. This mixing action is aided by the !act that the majority-ot the air passing through the tube is agitated by the numerous jet members which are disposed in the path of the air. The

'position oi the discharge ends of the nozzle pg as comprising a'be-ll crank 33 'sages' relative to `tion through the axis and so that the axis of the *tube is dis-- 'aocaec'z 'the conduits,

the flow of air through the tubes increases the suctional ,or injector' action on the liquid, aiding the pressure discharge'oi the same, and enables a greater volume of liquid to be drawn -into the Venturi passages than would otherwise :be the case.

The particular form and direction' of opening cfthe valve 21 causes the liquid flowing from the spindle to be discharged radially into the chamber a and toward the inner circumferential wan of the same. thus aiding in the'immediate flow of the liquid into the conduits la, whether the scoops are used or not.

From the foregoing description it will be read ily seen that I have produced such a 'device as substantially fulfllls the objects of 'the 'invention as set forth herein.

wme this specification sets' rorti` in detail the present and prefer ed construction of the device,

still in practice such deviaticns from such detail 'may be resorted to as'do not 'form a departure 'from the spirit of. the invention, the appended claims.

-as deflned by Having thus described my' invention what I claim as new and useful and desire to secure by Letters Patent is: i

i. A liquid spray device including an open ended tube, means mounting the tube for rotaair about a relatively remote posed tangent to its circle of rotation, means for rotating the tube, circumferentially spaced :let members mounted in and projecting part way across the interior of the tube, said members having opening into the tube in racing relation to the trailing end ther'eoi,` and means for feedins a liquid to thejet passages with such rotation.

2. A liquid spray device including an open ended tube, means mounting the tube for rotaa tion through theair about a relatively remote azis and so that the azis-of the tube is disposed tangent to its circle oi rotation. means for rotat.- ing the tube. circumferentialiy spaced jet members projecting into the tube radially thereof. said members having passages extending there through from the exterior of the tube to interiore terminations in racing relaticn to the trailing end of said tube. an outer tube about and secured to theiirst named tube to leave an enclosed chamber therebetween 'andall about the same. and means to feed liquid to the chamber. e

3. A structure as in claim 2, with means to removably mount the jet supporting tube in the outer tube.

4. A liquid spray device including an open ended. tube, means mounting the tube for rotation through the air about a. relatively remote' axis and so that the axisof the tube is disposed tangent to its circle of rotation, means for rotating the tube, means "forming an enclosed chamber about the tube, means to feed liquid to the chamber with means to cause liquid in the chamber to bedischarged into the tube in racing relation to the traiiing end thereof.

5. A iiquid spray device including a tuhular passage spindle fixed at one end, a body turn which the spindie discharges, conduits :radiating :rom the body` and communicatingwith the chamber, liquid vaporizing and discharge units mounted at the outer ends of and connected to .iectins i o the addacent of the spindle. a rod secured to the 'valve and A about the rod acting to opening direction against the rotation of the tube, and

. i aced etm m chamber in the' body into ap J e means to feed liquid into the spindle. means to flotate the body, and scoops proe ends oi the conduits. 6. A' structure as in claim 1,' in which such feeding means includes an impeller tube the cross sectional area 'of which is in excess of the combined area of 'the jet passages at their 'open end.

'1. A liquid-spray device for airplanes'ccmprising a rotary unit which includes a body, extending lengthwise of the airplane andpositioned in the air stream set up airplane, propeller bades fixed on the body. liquid vaporizing and discharge units mounted in the blades and including conduits communicating with the interier oi the body, 'means turnably supporting the body liquid to theconduits, and additional propeller blade mounted on the body in front of and in cirrcumferentially staggered relation to the first 20 chamberand ,registering with by the movement of the and includin means to feed with the unit and blades to cause such liquid to be vaporized and discharged into the atmosphere 'with the rotation of the unit. and additions] propeller blades 'fixed with the unit in front of and im circumferentially staggered relation to the. first named blades. i

9. A liquid spi-ay device including a' fixed tubular passage spindle, open at its rear end. arhollow body turnable on and proiecting rearwardly from the spindle,means forming an enclosed chamber in the body into which'the rea' end of the spirrdie discharges, conduits mounted on' the body and radiating from the chamber, liquid vaporizing' and discharse units to which the conduits lead, means .tcrotate the body. an elbow fltting connected to and proiecting from the forward end of the fitting for connection to a source of liquid suppiy. a valve over the rear chamber end projecting forwardly' along 'and inside the and out through spindle one side of the fltting, a spring hold' the valveclosed. and manual control'means' a pplied to the outer forward end of the rod to move the same in a valve the resistance oi the spring. J

Vio. A liquid spray device including anopen ended t`ube,'means to move the tube through the air .so thatair will flow through the tube with such movement, a chamber about the tube', means to feed liquid to the chamber. and circumferentialy spaced ;let members projecting into the' tube, said members having passages extending therethrough and leading from the'chamber to 50 terminations in facing relation to the trailing end of the tube.

11. -A liquid spray device for an airplane in: cluding an open ended tube. means mounting the` tube for rotation about a circular path dispcsed transversely of the airplane and so that the azis of the tube is tansent to such path, means to rotate the tube. a cbamber about the tube, means -tosupply liquid to the chamber, circumferentially proiecting into the tube' and disposed on a bias iengthwlse thereoi.-saidmembers being relatively 'narrow transversely of the tube; said members having sht-like passages extending therethrough and leading from the chamberto ta minations mmtubeinthelead-'l tion oi' rotation of the tube but adjacent the trailing end or said member 12. A liquid spray device tor en aii-plane 1ncluding an open ended tube. means mountingthe tube for rotatlon about a circular path disposed airplane ami so that the axis 13. A liqud spray device including' an open ended tube mounted for movementthrough the air, a conduit connected tq the tube intermediate space between the tubes.

14. A liquid'spray devioe tor an airplane including an open ended tube, means mounting the tube for rotation about a circular path disposed trnsversely ot the airplane and so that the axis e :@43,847 4 p .in side of the jet members relative to the direcadapte and terminating closely adjacent the Inner open ends of the tubes. a closure over the inner end of the conductor and adapted to open inwardly oi' the cylinder and toward the tube openings, whereby when the mediately moved into the tubes. v

16. A liquld spray devlce comprising a. cylinder adapted to be revolved at a relatively high speed,

with radally extending tubes in open communication with the interior or such cylinder; liquid dlspersers at the outer ends of said tubes, .a liquid conductor leadcylnderwhereby upon such iiper'sion oi' the liquid the same will be hence immediately moved 35 into said tubes. 

